Arenado is not in the lineup Sunday against the Mariners.
The 29-year-old is 0-for-13 with one walk over the past three games and will receive a day to reset Sunday. Overall this season, Arenado has a .185/.262/.352 slash line with three homers in 61 plate appearances. Chris Owings will take over at third base for the Rockies in the series finale.